A dual-band dual-mode wearable filtering antenna with independently controllable radiation zeros

Abstract

The application discloses a double-frequency double-mode wearable filtering antenna with independently controllable radiation zero points, adopts an air gap structure of superposition of a first dielectric substrate and a second dielectric substrate, and integrates structures such as a rectangular patch, a parasitic patch, a circular patch, a U-shaped slot and double short-circuit columns.The application generates two omnidirectional mode resonance points and two radiation zero points in a low-frequency band through the design of the top layer and the bottom layer circular patch and the double short-circuit columns; three directional mode resonance points and two radiation zero points in a high-frequency band through the rectangular patch loaded with the U-shaped slot, the rectangular slot and the parasitic patch. The independent regulation and control of the four radiation zero points can be realized by adjusting the circular patch radius, the short-circuit column length, the U-shaped slot and the parasitic patch length. The application adopts PDMS flexible material and conductive nylon cloth, has the characteristics of flexible wearable, double-frequency double-mode radiation and filtering, and is suitable for wireless scenes such as 2.45GHz ISM and 3.5GHz 5G communication.

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